Please wait until the problem happens again and then collect a fresh system log:
journalctl -b0 > journal.txt or if you had to reboot after it happened run: journalctl -b-1 > prevboot.txt and then attach the resulting file here. Please also follow the instructions in comment #3. ** Changed in: mutter (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871475 Title: [amdgpu] Black screen after screen lock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1871475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs